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A parallel combination of an 8 Omega res...

A parallel combination of an `8 Omega` resistor and an unknown resistor R is connected in series with a `16 Omega` resistor and a battery. This circuit is then disassembled, and the three resistors are then connected in series with each other oand the same battery. in both arrangements, the current through the `8 Omega` resistor is the same. What is the unknown resistance R?

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